Granted Patent
Utility
US 6,453,045 · App. 09/497,983
Telecommunication device with piezo-electric transducer for handsfree and private operating modes
Inventors:
Robert A. Zurek, Thomas Gitzinger, Michael L. Charlier
Patented Case
View Patent ↗
Granted: Sep 17, 2002
Filed: Feb 4, 2000
Inventors
Robert A. Zurek
Thomas Gitzinger
Michael L. Charlier
Assignee (at issue)
Motorola, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.